Abrading roll



Jan. 20, 1931.

' E. BERTRAND ABRADI-NG ROLL Filed March 26. 1928 I'NVENTOR" Patented1.5.20, i931 UNITED s rATss P AraNr o nmmsmc i nn'n'rnmn, orrvnmmnssncnnsn'rrs, nssronon r Um'ran anon m- -CHINERY CORPORATION, OFPATERSON, NEW JERSEY, A CORPOBATICN OF NEW- annanmo Ron. 7 i y eApplication filed larch 20, 1 928, Se'ria1 No. 284,892, and in GreatBritain larch 29, 1927.

This invention relates to .abrading rolls and is herein illustrated asembodied in an vided with an a abrading machine for removing surplusmaterial from shoes or shoe parts. Abrading machines, such, for example,as machines employed for removing surplus material from shoe bottoms or.for roughening soles prior to the application of cement for attachingthe soles to .up ers of shoes, commonly comprise a rotata 1erollrorading strip of paper, c 0th or metal stretched over the: roll toform a cylindrical abrading shell. Considerable. difliculty has beenexperienced in the use of such rolls, as heretofore constructed, byreason of the fact that inmanyinstances the abradin shells becomeclogged with waste material removed from the work thereby .necessitatingfrequent cleaning'or replaceinent of the shells. Furthermore, it hasbeen found to be difiicult to stretch the abrading' strips as tightlyover. the rolls and to "support the shells as firmly as is necessary tosecure and maintain the substantially cy lin-f drical abrading surfacesrequisite for smooth operation of the rolls.

Inviewof the foregoing it is, an object 'of the present invention toprovide an imroved abrading roll which, while retainmg all thecharacteristic advanta s of such rolls as heretofore constructed, w 11be less liable to clog ing and is so constructed that it can be rea ilyassembled and is particu larly smooth in operation. To this end, and

in accordance with one feature of the invention, there is provided astrip metal having. abrading projections thereon andwound in the 'formof a spiralto form an abrad'ing shell. Preferably and as shown,

the metal strip is wound aro und acore, the

ends of the strip beingsecured to the core to hold it in position inorder that-the strip will provide a substantially cylindrical abradingsurface. The ends of the illustrated strip are tapered and are providedwith keyhole slots which respectively ongage a stud on the core and asimilar stud on a, collar mounted on a reduced end of the core, thecollar being movable in a direction to tighten the strip around thecore.-

JFICE By constructing the abrading roll as above vided with spiral ribsfor supporting the shell so constructed that'the ribs serve .to removefrom the shell waste material passing through openings in the shell. Asillustrated, the abrading roll comprises acylindrical. core hayingspiral ribs on the outer surface thereof and a perforated abrading stripwound spirally around theicore in a direction opposite to the directionof the 7 spiral ribs on the core. The spiral ribs referred to engage.the abrading-strip and serve as supports for the-strip throughout itslength to maintain it substantially in'the form of a cylinder, thusinsuring smooth operation of the abrading shell until it is wornot. w

These and other featuresof the invention will be described more fully inconnection with the accompanying drawings and will 'be pointed out inthe appended claims.

In the drawings,

-- Fig. 1 is a. front elevation, partly in section, of a machineembodying the invention;

Fig. 2 is an end the machine;

Fig. 3 is a side view and shaft; N

Fig. 4-is a view showing-in cross-section details of the core; and.

View, partly in section, of

of the abrading roll Fig. 5 is a viewv illustrating the construe.

tion of'the abrading strip.

Asshown in Figs. 1, 2. and 3, the illustrated machine comprises ashaft'10 upon-which is mounted an abrading'roll comprising'a cast-' ironl-o're 12 secured to the shaft 10"and carrying-an abradingshell 141 Theshell 14 consists of an abradIng strip 16, preferably.

and as illustrated, formed from a thin. sheet of metal, such" as rsteel,spirally wound around the core 12. As illustrated in Fi 5 thefstrip 16'consists of an elongated; s eet of material havingen'ds 18 which areoppositely tapered or out upon the bias so that when the strip istightened around the core 12 until the side edges of the strip abut eachother the strip will form a shell substantially cylindrical in shapewith the tapered ends- 18 conforming to the ends ,of the core. 111

, with rows of abrading teeth 22 produced by perforating the strip bymeans of punches,

the projections or burrs surrounding the perforations forming the teeth.

To provide for supporting the strip 16 the central portion of the core12 (Fig. 3) has integral therewitha .plurality'of spiral ribs 24extending substantially the full length of the core and so spaced thatwhen the strip 16 is spirally wound around the core in the directionopposite to that of the ribs 24, the

strip is supported at frequent intervals throughout its length by one oranother 'of the ribs. Thus the ribs 24, by firmly supporting the strip16, operate to maintain it in the form of a cylinder after it has beentightened upon the core and prevent dis-' tortion of thestrip duringuse. By prevent ing distortion of the shell, a uniform abrading surfaceis provided, thereby insuring smooth operation ofthe roll during thelife of the shell. l I

In order to secure the abrading strip 16 in operative position and tofacilitate the tightening of the, strip upon the ribs 24, the core 12has a headed stud 26 (Figs. 1- and 3) for engagement with the keyholeslot, 20 in one end of the strip, a similar stud 28 being carried by acollar 30 and adapted for engagement with the slot i-n'the other end ofthe strip. The collar 30, best shown in Fig. 4, is loosely mounted upona reduced end 32 of the core 12, and is normally secured thereto bymeans of set-screws 34, which have sockets 36 for co-operation with asuitable socket wrench conveniently used for turning the collar 30 onthe core as well asfor tightening the set-screws. Av similar setscrew 38serves to secure the core 12 to the shaft 10. Q

In assembling the strip 16 on the core 12, oneend of the strip is placedover the stud 26 and the. strip is then wound around the core 12 andribs 24 in a direction opposite to that of the ribs, the other end ofthe strip being secured tothe collar 30 by means of the stud 28 thereon.The set-screws 34-are loosened and the collar 30 is turned in adirection to tighten the stri around the ribs 24 until the edges ofthestrip abut each other, as shown in Fig. 1. The set-screws 34 are thentightened, securing the collar 30 in, position with the strip 16 formingsubstantially a cylindricalshell supportedethroughout its length by theribs 24 and spaced thereby effort thanif the supporting surface were in.

the form of a cylinder.

In addition to acting as supports for the shell 14, the ribs 24 duringrotation of theshell operate to move waste material. which passesthrough the perforations in the shell, to the left in Fig. 3- and outthrough the openings between the core 12 and the shell. Thus,accumulations of material between the shell 14 and the core 12, whichwould tend to clog the abrading teeth'22, are prevented.

The shaft 10, which is suitably driven in a clockwise direction (Fig. 2)by means not shown, preferably forms part of a line shaft With which areconnected various machines and apparatus for operating upon shoes.Surrounding a portion of 'theshaft 10 and the abrading roll isareceptable 40 for collecting waste material removed from the work bythe" roll, the receptacle 40 being sup ported upon a bracket 42 bystraps 44. The lower portion of the receptacle'40 is provided with adrawer 46 to, facilitate disposal of waste material. The upper portionof the receptacle 40 has a removable hood 48 arranged to permit accessto the abrading roll for purposes ofrepair or replacement. The side ofthe receptacle below the hood 48 is provided with an opening 50 throughwhich the work is presented to the abrading roll. In order to preventwaste material in the form of dust from being thrown out into the roomby the shell 14 as it revolves, a plate '52 is mounted in the upperportion of the receptacle 40 in position adjacent to the shell and is soarranged as to deflect such'material downwardly. r

In theoperation of the machine, the work, such as a shoe, is insertedthrough the opening 50 in such manner that the' portion of the work tobe roughened is'brought into contact with the surface of the abrading.shell 14 which operates to remove portions of the material as required.Some of the material removed by the teeth 22 is forced through the.openings in the abrading stripand drops into the spaces between thespiral ribs 20 and, as the roll continues to rotate, the ribs will forcethe material to the left. (Fig. until it drops out of the open end ofthe abrading shell 14 into the receptacle Having described my invention.what 1 claim as new and desire tosecure by Letters Patent of the UnitedStates is:

1. An abrading roll. comprising a cylindrical core having spiral ribsthereon, and a perforated metal ab'radingstrip spirally wound .aroundthecore.--

2. An abrading roll comprising a cylindrical core having spiral ribsthereon, and a meta1 strip spirally wound around the core and havingthereon abrading teeth.

- 3. An abrading roll comprising a cylindrical core having spiral ribsthereon, and a perforated abrading strip spirally wound around the corein a direction opposed to the 'direction of the spiral ribs.

'4, An abrading roll comprising a cylin-- drical core having rigidspiral ribs thereon, and a cylindrical perforated abrading shellsupported on the spiral ribs.

5. Ana'brading roll comprisin'g a core, an

abrading shell comprising a perforated metal strip Wound around thecore, and spiral ribs integral with the core for supporting the shell. I6. An abrading roll comprising a core, a perforated abrading shellsurrounding the core, and rigid spiral ribs extending between the coreand the shell for supporting the shell and for carrying away Wastematerial which passes through the perforations in the shell.

7.. An abrading roll comprising a cylindrical core having a'reduced end,spiral ribs on the core, a collar mounted on the reduced end of thecore, studs carried by the core and the collar, and a perforatedabrading strip spirally wound around the core and having slots forengaging the studs to hold the strip in position.

In testimony whereof I name to this specification.

F REDERIC E. BERTRAND.

have signed my

